Pump.



C. H. FOX.

PUMP.

APPLICATION mm 007. 6, m4.

Patented June 27, 1916.

Ghzfles If. 70}, IN VEN 104.

CHARLES H. FOX, CINCIN NATI, OHIO.

PUMP.

Specification-of Letters Patent.

Patentedilune 27, 1916.

Application filed October 6, 1914. Serial No. 865,367.

To all whom it may concern Be it known that I, CHARLES H. Fox, a citizen of the United States, residing at Cincinnati, Ohio, have invented a new and useful lmprovement in Pumps, of which the following is a specification.

My invention relates to pumps of the multiplex double acting class adapted to the use of self propelled fire engines ,or for other suitable purposes, and the objects of my improvements are to provide selective means for detachably engaging the plunger-s in groups with the driving mechanism; to provide means for operating the pumps with their plungers in such successive order as to lessen the pulsations in the force chamber and secure a more continuous and less undulatin discharge therefrom; to provide means or regulating the volume of the dischar e to meet different requirements; to provlde a cooling device within the suction chamber for cooling the water from the jacket of the explosive engine; to provide the radiator with a valve controlled auxilia-ry cooling mechanism with the suction chamber for use, when the vehicle is stationary, and to provide such construction and assemblage of the cooperating members as to secure facility of operation and increased efficiency of action. These objects may be attained in the following described manner, as illustrated in the accompanying drawwhich: h" Figure ,1 isv a side elevation with parts broken away of an auto fire eng ne provided with my improved pump; Fig. 2 a transverse vertical section on the broken line a-a; Fig. 3 a horizontal section through the suction chamber, and Fig. 4 a vertical section of the valved tubular connections from the engine jacket with the tubes within the suction chamber.

In the drawings, 1 represents the acket of the explosive engine, 2 thejcrank shaft, 3 the radiator, 4 the tubular connections 1ncluding the gear pump 5, from the jackettherewit'n, all being constructed and arranged in the ordinary, manner. The-pump casing 6 is formed with pairs 0 of cylinders 7- and 8 preferably of different size and with suction and discharge openings'9'and 11. The'discharge openings communicate with the passages 12 which extend on each side of the pump between'the force chain rs in the usual manner. The usual "I s 13 lead from tbe'suction to the corresponding pulsation chambers of each'cylinder. The plungers 14 and 15 for-{each pair of cylinders are actuated by mean s of the connecting rods 16 from the corresponding a crank shafts 17 and 18. The cranks on each shaft are set quartering or at right angles and one shaft is arranged with the cranks thereon one-eighth of a turn in advance of those on the other. The gears 21 each formed with a single clutch tooth are mounted to turn on the respective pump shafts and continuously engage with the pinlon 23 secured on the engine shaft. Qlutch members 21 each formed with a single clutch toothl25'are splined on the respective pump shafts. Shifter yokes 2G for said respective melnjaers may be actuated-independently by me. us of the hand levers '27 and the rack and pinion connections--28 therewith.

The cap 29 secured over the opening 31 to the suction chamber is formed with chambers 32 and 33 which communicate through an opening 34 in thepartition 35. Said chambers ha e respective tubular connections 36 and 37 with the jacket and the radiator. One or more tubes 38 formed with return bends are extended within the suction chamber and communicate at their ends with the respective said chambers. 'A damper valve 39 provided with a handle 41 serves to close the opening 34 for directing the flow of water through the tubes or to close the tubes for directing the flow' through said opening as desired.

In operation, during the action of all the 'plungers under sufficient power, the pump fcharge of the water' 'from the force chambers. Where force instead of volume may IOO be required, either of the crank shafts may a be disconnected and the full power exerted, on the other shaft with its group of plungers. When the cylinders of one group differ in size from those of the other group ,the, respective groups will deliver different gvol I umes of water and with different fonceg Iii Vhen the pump is in action. the watiii from the jacket may be cooled in its 'ci 'c 4 lation through the tubes within the sucli nj chamber or the water in the suction ch'adrj ber warmed as desired.

force pump "the .eondin Harginfgifnlly inscribed in)? i'mprot 'ements, what 1 claim as my invention and desire to secure by Letters Patent of e the linitei'l States is:

1. The combination of thewater jacket of zlll-GXPlOSlX'i-l engine; a clo'sed water cireulntingehrenit ther'efon-a pump chamberindependent of the circuit" and inelosing a" port-ion of its len'gtlnphd a yalve controlled y-p V for the cireuit located without the chamber: i v V v v -':2.' The coin'n' natum of a water ]i\C-l 8i for zine iplosive engine, it 'olose'd conduitinch1d- *ingthe jacketaml n'qnnnp; a cooling chaml)erin clepend'ent.of the conduit encircling at portion of'its length, and a )zilxe controlled by-p ass 'fo -"the conduit located withoutthe ehzunbenfl 3. Theeombination of :1 pump chainhen a closed Wat-er circulating system inc-lndingnn engine jacket and 2 pump zgnd having 11- portion of its. length incl tivitl-iin the 'ehzunber without cmnznnnic'ating theren'ith,

and '11 valve controlled by czitecl without the chzu'nber.

t ss tl'zereii r logine provided v 4Q The combination with an explosire en:

ith- :1 incl:

nzit ely ,ther' .iectiens, and-n hand tween sguc zietuated 7 Valve for regulating the relative flow of 'wa te r thereih rough and t'hrough the conduit Within the ehainhen The combination with an explosive engine,--:r jacket therefor, a pump, a suction having a "po 7 1 chambe to pass heconduit-located within the chamben Com neetions therefrom communicatingwith the.

ja'cket, a by-pass forsaid connect-ions heof water-I, alternately through t the ehanjiheiz U 7. The Combination with an exlfilosive engine, a pump, and detachable driving connections from the enginetheizeiv-ith, of 2p. plurality of chambers formedlwith.a: pas- Sage between thennann tubular connections from-the respectn'e chambers n-ithftheenglue jzi liet a tubular passagehetweensaid the pump, and ayalve arranged to alter- "lately control the said passages.

ne vlay-{Miss anti 1 tn'en the jaeket 'a-nd the. chmi'iher, and a hand actuated valve for-directing the flow chambers and .es'tending -within achamher The con'ibination of a pump chamber, a water acket for an 'engine,'a closed water circulating ci-renit i ncli 1:in,q; the jacket and thechmnbeT piss-lojeatjedloutside of the the-conduit within the chamber. v

:GH'AS. H. FOX..- .Witnessesz' r C. J.- GROME,

R. S. CARR.

on thereofinclosed within.

. .-:Cdi'illli- Kind fi valveior emit-.rolling th relative" flow. of the. natef therethrough and through- 'saiclport onot 

